package moon.voice.voiceTranslationHandler.voiceOutPut.Impl;

import cn.hutool.core.util.ObjectUtil;
import cn.hutool.extra.spring.SpringUtil;
import com.alibaba.nls.client.AccessToken;
import com.alibaba.nls.client.protocol.NlsClient;
import com.alibaba.nls.client.protocol.OutputFormatEnum;
import com.alibaba.nls.client.protocol.SampleRateEnum;
import com.alibaba.nls.client.protocol.tts.SpeechSynthesizer;
import com.alibaba.nls.client.protocol.tts.SpeechSynthesizerListener;
import com.alibaba.nls.client.protocol.tts.SpeechSynthesizerResponse;
import moon.voice.config.AliyunSpeakConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;

/**
 * 此示例演示了：
 *      语音合成API调用。
 *      动态获取token。获取Token具体操作，请参见：https://help.aliyun.com/document_detail/450514.html
 *      流式合成TTS。
 *      首包延迟计算。
 */
@Component
public class SpeechSynthesizerImpl {
    private static final Logger logger = LoggerFactory.getLogger(SpeechSynthesizerImpl.class);

    @Autowired
    private AliyunSpeakConfig aliyunSpeakConfig;

    private static long startTime;
    private String appKey;
    NlsClient client;
    public SpeechSynthesizerImpl() {

        if(ObjectUtil.isNull(aliyunSpeakConfig)){
            this.aliyunSpeakConfig  = SpringUtil.getBean("aliyunSpeakConfig");
        }
        // String appKey, String accessKeyId, String accessKeySecret

        this.appKey = aliyunSpeakConfig.getAppKey();
        //应用全局创建一个NlsClient实例，默认服务地址为阿里云线上服务地址。
        //获取token，使用时注意在accessToken.getExpireTime()过期前再次获取。
        AccessToken accessToken = new AccessToken(aliyunSpeakConfig.getId(), aliyunSpeakConfig.getSecret());
        try {
            accessToken.apply();
            System.out.println("get token: " + accessToken.getToken() + ", expire time: " + accessToken.getExpireTime());
            client = new NlsClient(accessToken.getToken());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public SpeechSynthesizerImpl(String appKey, String accessKeyId, String accessKeySecret, String url) {

        this.appKey = aliyunSpeakConfig.getAppKey();
        AccessToken accessToken = new AccessToken(aliyunSpeakConfig.getId(), aliyunSpeakConfig.getSecret());
        try {
            accessToken.apply();
            System.out.println("get token: " + accessToken.getToken() + ", expire time: " + accessToken.getExpireTime());
            if(url.isEmpty()) {
                client = new NlsClient(accessToken.getToken());
            }else {
                client = new NlsClient(url, accessToken.getToken());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    private static SpeechSynthesizerListener getSynthesizerListener() {
        SpeechSynthesizerListener listener = null;
        try {
            listener = new SpeechSynthesizerListener() {
                File f=new File("tts_test.wav");
                FileOutputStream fout = new FileOutputStream(f);
                private boolean firstRecvBinary = true;
                //语音合成结束
                @Override
                public void onComplete(SpeechSynthesizerResponse response) {
                    //调用onComplete时表示所有TTS数据已接收完成，因此为整个合成数据的延迟。该延迟可能较大，不一定满足实时场景。
                    System.out.println("name: " + response.getName() +
                            ", status: " + response.getStatus()+
                            ", output file :"+f.getAbsolutePath()
                    );
                }
                //语音合成的语音二进制数据
                @Override
                public void onMessage(ByteBuffer message) {
                    try {
                        if(firstRecvBinary) {
                            //计算首包语音流的延迟，收到第一包语音流时，即可以进行语音播放，以提升响应速度（特别是实时交互场景下）。
                            firstRecvBinary = false;
                            long now = System.currentTimeMillis();
                            logger.info("tts first latency : {} ms", now - SpeechSynthesizerImpl.startTime);
                        }
                        byte[] bytesArray = new byte[message.remaining()];
                        message.get(bytesArray, 0, bytesArray.length);
                        fout.write(bytesArray);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                @Override
                public void onFail(SpeechSynthesizerResponse response){
                    //task_id是调用方和服务端通信的唯一标识，当遇到问题时需要提供task_id以便排查。
                    System.out.println(
                            "task_id: " + response.getTaskId() +
                                    //状态码 20000000 表示识别成功
                                    ", status: " + response.getStatus() +
                                    //错误信息
                                    ", status_text: " + response.getStatusText());
                }
            };
        } catch (Exception e) {
            e.printStackTrace();
        }
        return listener;
    }
    public void process() {
        SpeechSynthesizer synthesizer = null;
        try {
            //创建实例，建立连接。
            synthesizer = new SpeechSynthesizer(client, getSynthesizerListener());
            synthesizer.setAppKey(appKey);
            //设置返回音频的编码格式
            synthesizer.setFormat(OutputFormatEnum.WAV);
            //设置返回音频的采样率
            synthesizer.setSampleRate(SampleRateEnum.SAMPLE_RATE_16K);
            //发音人
            synthesizer.setVoice("siyue");
            //语调，范围是-500~500，可选，默认是0。
            synthesizer.setPitchRate(100);
            //语速，范围是-500~500，默认是0。
            synthesizer.setSpeechRate(100);
            //设置用于语音合成的文本
            synthesizer.setText("冰轮为谁圆缺");
            // 是否开启字幕功能（返回相应文本的时间戳），默认不开启，需要注意并非所有发音人都支持该参数。
            synthesizer.addCustomedParam("enable_subtitle", false);
            //此方法将以上参数设置序列化为JSON格式发送给服务端，并等待服务端确认。
            long start = System.currentTimeMillis();
            synthesizer.start();
            logger.info("tts start latency {} ms", System.currentTimeMillis() - start);
            SpeechSynthesizerImpl.startTime = System.currentTimeMillis();
            //等待语音合成结束
            synthesizer.waitForComplete();
            logger.info("tts stop latency {} ms", System.currentTimeMillis() - start);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            //关闭连接
            if (null != synthesizer) {
                synthesizer.close();
            }
        }
    }
    public void shutdown() {
        client.shutdown();
    }

//    public static void main(String[] args) throws Exception {
//        String appKey =  "8W0sAePusPiAPuie";
//        // System.getenv().get("NLS_APP_KEY");
//        String id =  "LTAI5tDf9RuxApLYMSNJ6wjj";
//        // System.getenv().get("ALIYUN_AK_ID");
//        String secret =   "y4VABsd19ZN7dNeMTFeG9CnPrFJqeM";
//        // System.getenv().get("ALIYUN_AK_SECRET");
//        String url = System.getenv().getOrDefault("NLS_GATEWAY_URL", "wss://nls-gateway-cn-shanghai.aliyuncs.com/ws/v1");
//        System.out.println(url);
//        SpeechSynthesizerImpl demo = new SpeechSynthesizerImpl(appKey, id, secret, url);
//        demo.process();
//        demo.shutdown();
//    }
}